Oxygen Cylinder. A steel tank for storing and shipping oxygen. Available for commercial work in 100, 200, and 250 cubic-foot sizes. The oxygen is compressed as free gas to 1800 pounds pressure at 68 degrees Fahrenheit.
Peening. Stretching the surface of cold metal by use of the hammer.
Penetration. A thorough welding completely through the joint of the pieces or parts being fused.
Preheating. The heating of a metal part previous to welding. Generally used to prevent strains or distortion from contraction and expansion; also to save gas.
Pool. A small body of molten metal formed by the torch flame.
Puddle Stick. A steel rod flattened at one end, used to break up oxides, remove dirt and build up additional metal. Particularly helpful in welding cast aluminum.
Puddling. The manipulation of the filler-rod or the puddle-stick in such a manner as to break up oxides, remove dirt, and aid in securing a good fusion of the metal.
Reducing Flame. (See [Carbonizing Flame].)
Reducing Valve. (See [Regulator].)
Regulator. A device for reducing and maintaining a uniform pressure of gas from cylinders, generators or shop lines.